Improvement in illuminating vault-covers



T. HYATT.

Illuminating Vault-Covers.

N0. 145,202, Patented Dec.2,1873.

Wi'rNEssEs: INvEN-rna.

UNITED STATES PATENT OFFICE.

THADDEUs HYATT, 0F NEW YORK, N. Y., AssIcNoE To ELIZABETH A. L. HYATT,0E SAME PLAGE.

i IM'PROVEMENT IN lLLUMlNATING VAULT-CCVERS.

.. Specification forming part of Letters Patent N0.145,202, datedDecember 2,1873; application tiled October 22, 1873,

GAsE S.

To all whom it may concern:

Beit known that I, THADnEUs HYATT, of New York, inthe county of New Yorkand in the State of New York, have invented certain new and usefulImprovements'in Illuminating- Gratings; and do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing making,` a part of this specication, in Which- Figure l is a plan view of the upper side of anilluminating pavement-plate having its lens secured in place by myimproved method, and Fig. 2 is a vertical section of the same.

Letters of like name and kind refer to like parts in each ofthe figures.

The design of my invention is to enable illuminating-lenses to besecurely set in plates having but little thickness; and it consists in alens set Within an inclosing` metal fra-me, which is capable of beingsoldered to and within a supporting-plate, substantially as and for thepurpose hereinafter specified.

-In the annexed drawing, A represents a glass lens, set Within. anannular metal frame, B, and secured. therein by means of cement orsolder applied to the space left between the upper contiguous corners ofsaid parts. The

frame B is preferably made tapering, its smallest end being downward,and may or may not have a horizontally-projecting head or liange at itsupper end; but its outer side is tinned or otherwise prepared, so that,when placed Within a corresponding opening', c, in a supporting-plate,C, it may be securely soldered to said plate.

This method of securing` the lens in place enables any desired thicknessof supportingplate to be employed, the attachment being' perfect andsecu1'e,'whether it has a vertical dept-h of one inch or one-twentiethof an inch.

Having thus fully set forth the nature and merits of my invention, whatI claim as new 1s An illuminating-lens set Within an inclosing metalframe, Which is capable of being soldered to and Within asupporting-plate, substantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this26th day of July, l1873.

. THADDEUS HYATT.

Vitnesses AMERosE MONELL,l CHARLES SPYR.

